Revision 9
Added by markw over 11 years ago
| common/zpu/zpu_config_regs.vhdl | ||
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-- 16-31: POKEY! Low bytes only... i.e. pokey reg every 4 bytes...
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-- Writes to registers
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process(cpu_data_in,wr_en,addr,addr_decoded, spi_speed_reg, spi_addr_reg, out1_reg, out2_reg, out3_reg, out4_reg, pause_reg)
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process(cpu_data_in,wr_en,addr,addr_decoded, spi_speed_reg, spi_addr_reg, out1_reg, out2_reg, out3_reg, out4_reg, pause_reg, pokey_enable)
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begin
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spi_speed_next <= spi_speed_reg;
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spi_addr_next <= spi_addr_reg;
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| ... | ... | |
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spi_enable <= '0';
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paused_next <= '0';
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if (not(pause_reg = X"00000000")) then
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if (not(pause_reg = X"00000000") and POKEY_ENABLE='1') then
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pause_next <= std_LOGIC_VECTOR(unsigned(pause_reg)-to_unsigned(1,32));
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paused_next <= '1';
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end if;
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Also available in: Unified diff
Clock pause by pokey enable, so its a fixed speed even if system clock 28MHz,57MHz or otherwise